@InProceedings{JonahKherPaul:2015:ObTePe,
author = "Jonah, Olusegun Folarin and Kherani, Esfhan Alam and Paula, Eurico
Rodrigues de",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "Observation of tec perturbation associated with medium scale
travelling ionospheric disturbance at the brazilian sector",
year = "2015",
organization = "International Congress of the Brazilian Geophysical Society, 14.",
abstract = "Using Total Electron Content (TEC) data obtained from GNSS data
over the Brazilian region, we investigate two-dimensional
structures of MediumScale Travelling Ionospheric Disturbances
(MSTIDs). Our analyzed data are taken from -55°W to -45°W and
-30°S to -20°S for the geomagnetic quiet days of 5 (D5), 6 (D6),
26 (D26), 27 (D27) December 2011 during daytime between 1217 UT. A
new method is applied to derive the perturbation component of TEC,
by subtracting average TEC at one location as a function of time
from a polynomial best fit of TEC at that location. Consequently,
by computing the crosscorrelation of the perturbation TEC with
change in space-time, we observe the manifestations of MSTIDs
characteristics like, velocity, direction of propagation,
wavelength etc. Since gravity wave is the principal daytime MSTIDs
mechanism, we investigate a possible connection between the
observed MSTIDs and Gravity waves by analyzing the temporal
variation of the height (h) of the F region over a
lowto-mid-latitude station of Cachoeira Paulista, (-45°W, 22°S,
dip latitude 16.9o S). This method reveals a maximum correlation
between these two parameters suggesting an enhancement of gravity
wave activity during the time when MSTIDs were observed.",
conference-location = "Rio de Janeiro, RJ",
conference-year = "3-6 Aug.",
urlaccessdate = "27 abr. 2024"
}